JPS605723B2 - How to install anchors for backstays in cable erection construction methods such as arch bridges - Google Patents
How to install anchors for backstays in cable erection construction methods such as arch bridgesInfo
- Publication number
- JPS605723B2 JPS605723B2 JP10878381A JP10878381A JPS605723B2 JP S605723 B2 JPS605723 B2 JP S605723B2 JP 10878381 A JP10878381 A JP 10878381A JP 10878381 A JP10878381 A JP 10878381A JP S605723 B2 JPS605723 B2 JP S605723B2
- Authority
- JP
- Japan
- Prior art keywords
- anchors
- backstays
- cable erection
- erection construction
- arch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Description
【発明の詳細な説明】
この発明はアーチ橋などをケーブルェレクション工法に
よって構築する場合に使用する支持鉄塔のバックステー
用左右アンカーの設置方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for installing left and right anchors for backstays on a support tower used when constructing an arch bridge or the like by the cable election method.
第１図は本発明を適用すべきアーチ橋（中路ローゼ橋）
の一例を示すもので、第２図〜第５図はその橋梁の構築
方法を示すものである。Figure 1 shows an arch bridge to which the present invention is applied (Nakaji Rose Bridge)
An example of this is shown, and FIGS. 2 to 5 show a method of constructing the bridge.
図中１は両岸の橋台、２はその下方のアーチ沓、３はア
ーチリブ、４は補剛桁、５はアーチリブ３と補剛桁４と
を連結する垂直材、６はケーブルェレクション工法を実
施するため橋台１上に立てた門形支持鉄塔、７は支持鉄
塔６の上端部間に張り渡したケーブル、８はそのケーブ
ルクレーン、９は支持鉄塔６のバックステーワィャー、
１０，１１，１２はそのアンカー、１３はアーチ架設時
に各アーチリブ３を支持鉄塔６から斜吊りするための斜
吊素、１４は地山、１５（第４図参照）は地山１４を避
けて設けた道路である。In the figure, 1 is the abutment on both banks, 2 is the arch shoe below, 3 is the arch rib, 4 is the stiffening girder, 5 is the vertical member connecting the arch rib 3 and the stiffening girder 4, and 6 is the cable selection method. 7 is a cable stretched between the upper ends of the support tower 6, 8 is its cable crane, 9 is a back stay wire of the support tower 6,
Reference numerals 10, 11, and 12 refer to the anchors; 13 refers to a diagonal hanging element for diagonally suspending each arch rib 3 from the support tower 6 during arch erection; 14 refers to the ground; and 15 (see Fig. 4) refers to an anchor to avoid the It is a road built.
なお第２図の１６は架設工事中設けておくワイヤーブリ
ツジである。従来、支持鉄塔６のバックステーワィャー
およびそのアンカーは、第３図および第４図に二点鎖線
図で示すように、橋梁の長手方向中心線ＣＬと平行な延
長線上にバックステーワィャー９′を引出し、そのアン
カー１０′は左右等高の位置に設置していたが、地山１
４が前記中心線ＣＬ上に張り出しているような地形の場
合は、前記した位置にアンカーを設置することは困難で
あり、無理に実施すれば工費が嵩むという問題があった
。Note that 16 in Fig. 2 is a wire bridge that will be installed during the construction work. Conventionally, the backstay wire of the support tower 6 and its anchor have been installed on an extended line parallel to the longitudinal centerline CL of the bridge, as shown by the dashed-double lines in FIGS. 3 and 4. -9' was pulled out, and its anchors 10' were installed at the same height on the left and right, but
In the case of a topography in which the anchor 4 protrudes onto the center line CL, it is difficult to install the anchor at the above-mentioned position, and there is a problem in that if it is forced, the construction cost will increase.
本発明はこのような問題点を解決するためなされたもの
で、地形にさからわずアンカーを設置して十分その目的
を達成できるようにすることにより、ケーブルェレクシ
ョン工法の適用範囲を拡張することを目的とするもので
ある。以下第３図〜第５図について本発明の実施例を説
明する。The present invention was made to solve these problems, and aims to expand the scope of application of the cable erection method by making it possible to install anchors regardless of the terrain and sufficiently achieve the purpose. This is the purpose. Embodiments of the present invention will be described below with reference to FIGS. 3 to 5.
本実施例においては「橋に向って右側（本実施例では上
流側）のアンカー１ １と、左側（本実施例では下流側
）のアンカー１２とを、平面的には第４図に示すように
、橋梁の長手方向中心線ＣＬの両側のほぼ均等位置に、
すなわち１，主１２になるように配置すると共に、立面
的には第３図に示すように高低差を付してそれぞれ設置
する。In this embodiment, the anchor 11 on the right side (upstream side in this embodiment) and the anchor 12 on the left side (downstream side in this embodiment) are arranged as shown in FIG. , at approximately equal positions on both sides of the longitudinal centerline CL of the bridge,
That is, they are arranged so that the main parts are 1 and 12, and are installed with elevation differences as shown in FIG.
すなわち右側のアンカー１１は低い地盤に設置し、左側
のアンカー１２は地山１４の高い地盤に設置する。また
門形支持鉄塔６の上端部６ａの左右両側にそれぞれ２本
の連結素１７を連結して「各連結素１７に、第５図で詳
細に示すようにィコライズシーブ１８を連結し、これら
各ィコライズシーブ１８に掛け渡した各バックステーワ
ィャー９の一端部を一方のアンカー１１にそれぞれ鯵止
すると共に、ワイヤ‐９の他端部を他方のアンカー１２
にそれぞれ※止する。That is, the anchor 11 on the right side is installed on a low ground, and the anchor 12 on the left side is installed on a high ground on the ground 14. In addition, two connecting elements 17 are connected to the left and right sides of the upper end 6a of the portal support tower 6, and an equalizing sheave 18 is connected to each connecting element 17 as shown in detail in FIG. One end of each backstay wire 9 that is stretched over the wire 18 is fastened to one anchor 11, and the other end of each backstay wire 9 is fastened to the other anchor 12.
*Stop each time.
上述のようにすれば、ィコラィズシーブ１８によって二
分された両側のバックステーワイヤー９には、それぞれ
均等な張力が作用し、その合力の方向は「前記した橋梁
の長手方向中心線ＣＬと平面的にほぼ合致する。As described above, equal tension acts on the backstay wires 9 on both sides divided into two by the equalizing sheave 18, and the direction of the resultant force is approximately parallel to the longitudinal centerline CL of the bridge described above. Match.
したがって本発明によれば、従来橋梁の長手方向中心線
ＣＬと平面的に平行に設けたバックステーヮィャーおよ
びそのアンカーと同様の効果を発揮することができる。
上述の通り地形が悪いため、ケーブルェレクション工法
では従釆実施が困難であったものでも、本発明によれば
容易に実施できるようになるから、本発明はケーブルェ
レクション工法の適用範囲を拡張することができるとい
う効果がある。Therefore, according to the present invention, it is possible to exhibit the same effects as the conventional backstager and its anchor provided in plane parallel to the longitudinal centerline CL of the bridge.
As mentioned above, the present invention expands the scope of application of the cable ejection method because it is difficult to implement it using the cable ejection method due to the poor terrain. The effect is that it can be done.
第１図は本発明を適用すべきアーチ橋の全体図、第２図
はそのアーチ橋を架設するためのケーフルェレクション
工法の説明図、第３図は本発明の実施状態を示す部分立
面図、第４図はその平面図、第５図はィコラィズシーブ
部の詳細図である。
１……橋台、２・…”アーチ沓、３・・・・・・アーチ
リブ「 ４・・…−補剛桁、５・…”垂直材「 ６・…
川門形支持鉄塔、７・・・・・・ケーブル、８・・・…
ケーブルクレーン、９……バックステーワイヤー、１０
，１１，１２……アンカー、１３……斜吊素、１４……
地山、１５・・・…道路、１６・・・・・・ワイヤーブ
リツジ「１７……連結素、１８・・…・イコライズシー
フ。
第３図第１図
第２図
第４図
第５図Fig. 1 is an overall view of an arch bridge to which the present invention is applied, Fig. 2 is an explanatory view of the Kefelerection construction method for constructing the arch bridge, and Fig. 3 is a partial elevation view showing the implementation state of the present invention. 4 is a plan view thereof, and FIG. 5 is a detailed view of the equalizing sheave portion. 1... Bridge abutment, 2..." arch foot, 3... arch rib " 4... - stiffening girder, 5..." vertical member " 6...
River gate type support tower, 7... Cable, 8...
Cable crane, 9... Backstay wire, 10
, 11, 12... Anchor, 13... Oblique hanging element, 14...
Earth, 15... Road, 16... Wire bridge 17... Connected element, 18... Equalize thief. Figure 3 Figure 1 Figure 2 Figure 4 Figure 5
Claims (1)
門形支持鉄塔のバツクステー用左右アンカーが、地形に
よって橋梁の長手方向中心線と平行な延長線上の等高位
置に設置できない場合に、左右のアンカーを平面的には
前記中心線の両側のほぼ均等位置に配置すると共に、立
面的には高低差を付してそれぞれ設置し、前記門形支持
鉄塔の上端部の左右両側にそれぞれ接続したイコライズ
シーブに掛け渡したバツクステーワイヤーの両端部をそ
れぞれ前記左右のアンカーに繋止することを特徴とする
アーチ橋などのケーブルエレクシヨン工法におけるバツ
クステー用アンカー設置方法。1. When the left and right anchors for the backstay of a portal support tower in the cable erection construction method of an arch bridge etc. cannot be installed at the same height on an extended line parallel to the longitudinal center line of the bridge due to the topography, the left and right anchors may be They are placed at approximately equal positions on both sides of the center line, and are installed with a height difference in elevation, and are hooked to equalizing sheaves connected to the left and right sides of the upper end of the portal support tower. A method for installing anchors for backstays in a cable erection construction method for arch bridges, etc., characterized in that both ends of the passed backstay wire are tied to the left and right anchors, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10878381A JPS605723B2 (en) | 1981-07-14 | 1981-07-14 | How to install anchors for backstays in cable erection construction methods such as arch bridges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10878381A JPS605723B2 (en) | 1981-07-14 | 1981-07-14 | How to install anchors for backstays in cable erection construction methods such as arch bridges |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5811205A JPS5811205A (en) | 1983-01-22 |
| JPS605723B2 true JPS605723B2 (en) | 1985-02-13 |
Family
ID=14493360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10878381A Expired JPS605723B2 (en) | 1981-07-14 | 1981-07-14 | How to install anchors for backstays in cable erection construction methods such as arch bridges |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS605723B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5189546B2 (en) * | 2009-04-01 | 2013-04-24 | 三井住友建設株式会社 | Construction method of Nakaji arch bridge |
| CN108374347A (en) * | 2018-04-12 | 2018-08-07 | 中铁上海工程局集团有限公司 | A kind of high-speed railway large span cable-carried arch bridge steel lagging jack buckling and hanging system construction method |
| CN109137745B (en) * | 2018-10-22 | 2020-06-23 | 四川路桥华东建设有限责任公司 | Construction method for using side span tower pressing cable as back cable of buckling and hanging system |
-
1981
- 1981-07-14 JP JP10878381A patent/JPS605723B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5811205A (en) | 1983-01-22 |
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